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A systematic approach to area-wide tsetse distribution and abundance maps

Published online by Cambridge University Press:  09 March 2007

G. Hendrickx*
Affiliation:
FAO Trypanosomosis project GCP-RAF-347-BEL, BP 2034 Bobo Dioulasso, Burkina Faso
A. Napala
Affiliation:
FAO Trypanosomosis project GCP-RAF-347-BEL, BP 114 Sokodé, Togo
B. Dao
Affiliation:
FAO Trypanosomosis project GCP-RAF-347-BEL, BP 114 Sokodé, Togo
D. Batawui
Affiliation:
FAO Trypanosomosis project GCP-RAF-347-BEL, BP 114 Sokodé, Togo
R. De Deken
Affiliation:
ITG/IMT, Nationale Straat 155, 2000 Antwerp, Belgium
A. Vermeilen
Affiliation:
FAO Trypanosomosis project GCP-RAF-347-BEL, BP 114 Sokodé, Togo
J.H.W. Slingenbergh
Affiliation:
FAO, AGAH, Viale delle Terme di Caracalla, 00100 Rome, Italy
*
* Fax: +(226) 97 3736 E-mail: hendrickx.vangorp@fasonet.bf

Abstract

A raster or grid-based Geographic Information System with data on tsetse, trypanosomosis, animal production, agriculture and land use has recently been developed in Togo. This paper describes the generation of area-wide digital tsetse distribution and abundance maps and how these accord with the local climatic and agro-ecological setting. Results include: (i) a spatial demarcation of ecologically distinct areas, producing a seasonal cluster map based on seasonal weather data and temporal series of satellite derived National Oceanic and Atmospheric Administration (NOAA) AVHRR and METEOSAT variables: (ii) tsetse distribution maps of Glossina tachinoides Westwood, G. palpalis palpalis (Robineau-Desvoidy), G. morsitans submorsitansNewstead, G. longipalpis Wiedemann, G. medicorum Austen and G. fusca fusca (Walker); and (iii) tsetse abundance or ‘risk’ maps, corrected for within database seasonal fluctuations, for G. tachinoides and G. p. palpalis. It is concluded that grid-based sampling is the ideal method for rapid assessment of the current vector and disease situation within any country or region, and that remote sensing has an important role to play in planning such a sampling system.

Type
Review Article
Copyright
Copyright © Cambridge University Press 1999

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